Inventor · disambiguated record
Keita Shimizu
Also filed as: SHIMIZU KEITA
80 granted patents·7 pending applications·122 citations·filing 2009–2025
98Inventor score
Top patents by PatentIndex Score
87 records- 0198US11415933B2Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2020·Granted Aug 16, 2022·4 cites·5 claims
- 0297US11803154B2Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2023·Granted Oct 31, 2023·2 cites·18 claims
- 0396US10379492B2Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2019·Granted Aug 13, 2019·5 cites·17 claims
- 0496US10241467B2Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2018·Granted Mar 26, 2019·7 cites·19 claims
- 0595US12092974B2Toner cartridge attachable to image forming apparatusBROTHER IND LTD·Filed 2023·Granted Sep 17, 2024·1 cites·9 claims
- 0695US9535396B2Cartridge having photosensitive body cartridge and developer cartridgeBROTHER IND LTD·Filed 2015·Granted Jan 3, 2017·9 cites·16 claims
- 0793US12164263B2Toner cartridge including memory holder cover having pawl engaged with hook of gear coverBROTHER IND LTD·Filed 2022·Granted Dec 10, 2024·2 cites·6 claims
- 0892US12140882B2Developing cartridge including electrical contact surface positioned away from developing rollerBROTHER IND LTD·Filed 2023·Granted Nov 12, 2024·1 cites·23 claims
- 0991US11714379B2Image forming apparatusBROTHER IND LTD·Filed 2022·Granted Aug 1, 2023·1 cites·15 claims
- 1090US9964922B2Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2017·Granted May 8, 2018·2 cites·21 claims
- 1190US2025123591A1Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2024·Application pending·0 cites
- 1288US9182740B2Cartridge having photosensitive body cartridge and developer cartridgeSHIMIZU KEITA·Filed 2014·Granted Nov 10, 2015·7 cites·19 claims
- 1387US9342041B2Developing cartridge having drive-force receiving memberBROTHER IND LTD·Filed 2015·Granted May 17, 2016·3 cites·13 claims
- 1486US12204275B2Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2023·Granted Jan 21, 2025·0 cites·12 claims
- 1586USD723614SToner cartridgeBROTHER IND LTD·Filed 2014·Granted Mar 3, 2015·33 cites·1 claims
- 1686US2024345508A1Toner cartridge attachable to image forming apparatusBROTHER IND LTD·Filed 2024·Application pending·0 cites
- 1785US12271145B2Image forming apparatusBROTHER IND LTD·Filed 2024·Granted Apr 8, 2025·0 cites·15 claims
- 1883US11126109B2Developing cartridge including coupling and clutch for allowing rotation of coupling in first direction and stopping rotation of coupling in second directionBROTHER IND LTD·Filed 2019·Granted Sep 21, 2021·1 cites·28 claims
- 1983US10048616B2Detection gear provided with protrusion, and developing cartridge provided with the sameBROTHER IND LTD·Filed 2017·Granted Aug 14, 2018·2 cites·120 claims
- 2083US2025341803A1Image forming apparatusBROTHER IND LTD·Filed 2025·Application pending·0 cites
- 2182US12282270B2Developer cartridge provided with gear having engagement portionsBROTHER IND LTD·Filed 2023·Granted Apr 22, 2025·0 cites·20 claims
- 2282US11994825B2Image forming apparatusBROTHER IND LTD·Filed 2023·Granted May 28, 2024·0 cites·15 claims
- 2382US11604433B2Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2022·Granted Mar 14, 2023·0 cites·7 claims
- 2482US11150600B2Image forming apparatusBROTHER IND LTD·Filed 2020·Granted Oct 19, 2021·1 cites·13 claims
- 2582US10866561B2Developing cartridge including first gear and second gear rotatable relative to first gearBROTHER IND LTD·Filed 2019·Granted Dec 15, 2020·1 cites·10 claims
- 2678US10747173B2Developing cartridge providing layout of electrodes and detection gearBROTHER IND LTD·Filed 2019·Granted Aug 18, 2020·0 cites·5 claims
- 2778US2025147451A1Developer cartridge provided with gear having engagement portionsBROTHER IND LTD·Filed 2025·Application pending·0 cites
- 2877US12072006B2Developing deviceBROTHER IND LTD·Filed 2022·Granted Aug 27, 2024·0 cites·14 claims
- 2977US11635707B2Toner cartridge attachable to image forming apparatusBROTHER IND LTD·Filed 2021·Granted Apr 25, 2023·0 cites·20 claims
- 3077US2025036043A1Developing cartridge including electrical contact surface positioned away from developing rollerBROTHER IND LTD·Filed 2024·Application pending·0 cites
- 3175US11448999B2Image forming apparatusBROTHER IND LTD·Filed 2021·Granted Sep 20, 2022·0 cites·21 claims
- 3274US12360493B2Developing cartridgeBROTHER IND LTD·Filed 2024·Granted Jul 15, 2025·0 cites·12 claims
- 3374US11579543B2Developer cartridge provided with gear having engagement portionsBROTHER IND LTD·Filed 2020·Granted Feb 14, 2023·0 cites·20 claims
- 3473US10983456B2Developer cartridge provided with gear having engagement portionsBROTHER IND LTD·Filed 2019·Granted Apr 20, 2021·0 cites·15 claims
- 3572US12066784B2Image forming apparatusBROTHER IND LTD·Filed 2023·Granted Aug 20, 2024·0 cites·12 claims
- 3672US11181852B2Toner cartridge attachable to image forming apparatusBROTHER IND LTD·Filed 2020·Granted Nov 23, 2021·0 cites·20 claims
- 3771US11740569B2Developing cartridge including coupling and clutch for allowing rotation of coupling in first direction and stopping rotation of coupling in second directionBROTHER IND LTD·Filed 2021·Granted Aug 29, 2023·0 cites·20 claims
- 3871US11448289B2Developing deviceBROTHER IND LTD·Filed 2021·Granted Sep 20, 2022·0 cites·25 claims
- 3971US10705456B2Toner cartridge attachable to image forming apparatusBROTHER IND LTD·Filed 2018·Granted Jul 7, 2020·0 cites·19 claims
- 4071USD849131SToner cartridgeBROTHER IND LTD·Filed 2017·Granted May 21, 2019·12 cites·1 claims
- 4170US10082806B2Flow-rate control device and flow-rate control programHORIBA STEC CO LTD·Filed 2014·Granted Sep 25, 2018·4 cites·9 claims
- 4269US11982973B2Developing cartridgeBROTHER IND LTD·Filed 2023·Granted May 14, 2024·0 cites·14 claims
- 4369US10365582B2Developer cartridge provided with gear having engagement portionsBROTHER IND LTD·Filed 2018·Granted Jul 30, 2019·0 cites·16 claims
- 4468US9477180B2Developing device including housing having first frame that supports agitation member and second frame jointed to first frame and configured to accommodate developerBROTHER IND LTD·Filed 2015·Granted Oct 25, 2016·1 cites·17 claims
- 4567US12295190B2Light-emitting device and method of manufacturing the light-emitting deviceNICHIA CORP·Filed 2022·Granted May 6, 2025·0 cites·11 claims
- 4667US11204585B2Developing cartridge including first gear and second gear rotatable relative to first gearBROTHER IND LTD·Filed 2020·Granted Dec 21, 2021·0 cites·10 claims
- 4767US11028903B2Developing deviceBROTHER IND LTD·Filed 2020·Granted Jun 8, 2021·0 cites·35 claims
- 4866US10678182B2Developing cartridge including engaging member movable with helical gear and engageable with gear coverBROTHER IND LTD·Filed 2018·Granted Jun 9, 2020·0 cites·17 claims
- 4966US10180640B2Toner cartridge attachable to image forming apparatusBROTHER IND LTD·Filed 2017·Granted Jan 15, 2019·0 cites·20 claims
- 5066US9952535B2Developer cartridge provided with gear having engagement portionsBROTHER IND LTD·Filed 2017·Granted Apr 24, 2018·0 cites·78 claims
Showing the top 50 of 87 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Keita Shimizu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →